Possibility Of Pregnancy

Hi could someone help me. Nov 8 to 11 ang ovulation ko dapat, then nov 13 and 14 may nangyari samin ni boyfie, both days wala kaming condom na gamit. Is there a possibility na mapreggy ako? Kasi alam ko within 24 hours kapag hindi nafertilize yung egg madidisolve na sya eh. We're trying pa naman.